Tkinter，我无法让我的滑块显示所有按钮

Question

下面是我正在做的一个示例。我在滑动画布上放置了500个按钮，而且我只能滚动到按钮109.我在做什么错了？我试着调整窗口小部件的宽度，以及scrollregion。我确信我忽略了一些简单的东西。

import Tkinter 
from Tkinter import * 
import os, signal 

window1 = Tkinter.Tk() 
window1.attributes('-fullscreen', True) 
window1.bind("<Escape>", lambda e: e.widget.quit()) 

window2 = Tkinter.Label(window1) 
window2.configure(bg = "blue") 
window2.place(x=0, y=0, relwidth=1, relheight=1) 

frame=Frame(window2, height=160) 
frame.pack(anchor=Tkinter.SW,side=Tkinter.BOTTOM) 

canvas=Canvas(frame,bg='black', width=5500, height=160, scrollregion=(0,0,5500,0)) 

hbar=Scrollbar(frame,orient=HORIZONTAL, bg='black', troughcolor='black') 
hbar.pack(side=BOTTOM,fill=X) 
hbar.config(command=canvas.xview) 

canvas.config(xscrollcommand=hbar.set, xscrollincrement=4.5) 
canvas.pack(side=LEFT,expand=True,fill=BOTH) 
frm = Frame(canvas) 
canvas.create_window(0, 0, window=frm, anchor='nw') 

def quit(): 
    window1.quit() 

count = 0 
while (count < 500): 
    X = Tkinter.Button(frm, text=str(count), height=6, width=5, padx=0, pady=0, highlightcolor="blue", highlightthickness=3, command=quit) 
    X.pack(side = "left") 
    count = count + 1 

window1.mainloop() 

Answer 1

的问题是，你scrollregion上Canvas实例不够宽。你可以计算出它需要多宽是基于所有按钮的请求宽度，然后设置scrollregion完成所有的按钮后，像这样：

import Tkinter 
import os, signal 

window1 = Tkinter.Tk() 
window1.attributes('-fullscreen', True) 
window1.bind("<Escape>", lambda e: e.widget.quit()) 

window2 = Tkinter.Label(window1) 
window2.configure(bg = "blue") 
window2.place(x=0, y=0, relwidth=1, relheight=1) 

frame = Tkinter.Frame(window2, height=160) 
frame.pack(anchor=Tkinter.SW,side=Tkinter.BOTTOM) 

canvas=Tkinter.Canvas(frame,bg='black', width=5500, height=160) 

hbar=Tkinter.Scrollbar(frame,orient=Tkinter.HORIZONTAL, bg='black', troughcolor='black') 
hbar.pack(side=Tkinter.BOTTOM,fill=Tkinter.X) 
hbar.config(command=canvas.xview) 

canvas.config(xscrollcommand=hbar.set, xscrollincrement=4.5) 
canvas.pack(side=Tkinter.LEFT, expand=True, fill=Tkinter.BOTH) 
frm = Tkinter.Frame(canvas) 
canvas.create_window(0, 0, window=frm, anchor='nw') 

def quit(): 
    window1.quit() 

count = 0 
width = 0 
while (count < 500): 
    X = Tkinter.Button(frm, text=str(count), height=6, width=5, padx=0, pady=0, highlightcolor="blue", highlightthickness=3, command=quit) 
    X.pack(side = "left") 
    width += X.winfo_reqwidth() 
    count = count + 1 

canvas.config(scrollregion=(0, 0, width, 0)) 
window1.mainloop() 

作为一个侧面说明，你的第一个两个进口报表是多余的。在这个例子中，我放弃了第二个，以避免污染全局命名空间。